The ratios of x to y is 3 to 2, and the ratio of z to y is 5 to 1. What is the ratio of x to z?

Asif spent $745.10 on 13 new file cabinets for his office. small file cabinets cost $43.50 and large file cabinets cost $65.95. write and solve a system of equations to find the number of small cabinets and large cabinets he purchased. determine if each statement is true or false. 1. he purchased 5 small cabinets. true or false 2. he purchased 7 large cabinets. true or false 3. he spent $527.60 on large cabinets. true or false

Ineed me i stuck and i don’t want to get it wrong

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)